如何在react-native-qrcode-scanner中关闭摄像头/扫描仪？

import React, { useState } from 'react';
import { View, Button } from 'react-native';
import QRCodeScanner from 'react-native-qrcode-scanner';

const App = () => {
  const [scannerVisible, setScannerVisible] = useState(false);

  const toggleScanner = () => {
    setScannerVisible(!scannerVisible);
  };

  return (
    <View style={{ flex: 1 }}>
      {scannerVisible && (
        <QRCodeScanner
          onResult={(result) => {
            console.log(result);
            toggleScanner(); // 扫描完成后关闭扫描器
          }}
        />
      )}
      <Button title={scannerVisible ? '关闭扫描仪' : '打开扫描仪'} onPress={toggleScanner} />
    </View>
  );
};

export default App;